Hi,
Make sure you are following the article below to install UR5 for SCOM 2012 R2:
http://support.microsoft.com/kb/3023138
Please provide more details about this issue, you may check operation manager event logs on your management server.
And check the alert details, and find the possible cause and resolution there.
You may need to restart SCOM related services and check whether it helps.
Regards,
Yan Li
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